Dale, Edgar  <br/><br/>
Audio-visual methods in teaching / 
Edgar Dale. 
 - Rev ed. 
 - U.S.A :  Henry Holt,  1954. 
 - ix, 534 p. :  ill. ;  26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>     Audio-visual education.
<br/><br/><label>Dewey Class. No.: </label>371.33  / DAL